fix #sync.cfg/pull: don't remove by default

and convert existing (manually created/edited) jobs to the previous
default value of 'true'. the GUI has always set this value and defaults
to 'false'.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Reviewed-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

pbs-api-types/src/jobs.rs

@@ -52,7 +52,7 @@ pub const VERIFICATION_SCHEDULE_SCHEMA: Schema = StringSchema::new(
 
 pub const REMOVE_VANISHED_BACKUPS_SCHEMA: Schema = BooleanSchema::new(
     "Delete vanished backups. This remove the local copy if the remote backup was deleted.")
-    .default(true)
+    .default(false)
     .schema();
 
 #[api(